Round to X

Rounds the supplied N-D matrix to the values in a supplied array.

Need to round your data to a set of particular values? This function takes as its input the data you want to round, the values you want the data rounded /to/, and a rounding method (currently 'round', 'floor' and 'ceil', that each work the way their .m counterparts do).
The function is vectorized for efficiency.
round2x(data,roundvals,method)
Given an N-dimensional array of numbers, this function will round all the elements of the array to the nearest elements in the supplied vector or ND array.

Example:
data = rand(2,9)*10; %data that you want to round
roundvals = [-1 2 3.14 8]; %numbers you want to round the data to
rounded = ROUND2X(data,roundvals);

If no rounding method is chosen, the function acts like 'round.m' in terms of rounding direction. The following methods can also be called:
'round' (Default: round towards nearest)
'floor' (round towards -infinity)
'ceil' (round towards +infinity)

Example:
rounded = ROUND2X(data,roundvals,'floor');

Happy rounding!